Cave Nebula August 2019.

Sharpless 155, is a diffuse nebula in the constellation of Cepheus within a larger nebula complex containing emission, reflection, and dark nebulosity. It is widely known as the Cave Nebula, though that name was applied earlier to Ced 201, a different nebula in Cepheus. Sh-155 is an ionized H II region with ongoing star formation activity and lies at an estimated distance of 2400 light-years. Imaged over 2 nights the 17th and 25th of August 2019.

HEQ5 PRO

ED100mm DS-PRO

QHY294C Gain 2900 Offset 20 -20C

STC Duo narrowband filter

15 x 720sec subs

12 x 900sec subs

Processed using Pixinsight and Photoshop.

Done